Display driving circuit and method and display module

Abstract

The invention provides a display driving circuit and method and a display module, and the display driving circuit comprises a driving chip which is configured to output a target GOA signal from a first output end and output a detection signal from a second output end, and the detection signal is used for representing whether the driving chip is in an overcurrent protection state or not; the control circuit is configured to output a first control signal and a second control signal according to the detection signal; the first connecting end of the first switching device is electrically connected with the first output end of the driving chip, the second connecting end of the first switching device is configured to be electrically connected with the first GOA circuit, the first control end of the first switching device is electrically connected with the control circuit, and the first switching device is configured to control connection and disconnection between the first connecting end and the second connecting end based on a first control signal; the third connecting end of the second switching device is electrically connected with the first output end of the driving chip, the fourth connecting end of the second switching device is configured to be electrically connected with the second GOA circuit, and the second control end of the second switching device is electrically connected with the control circuit and configured to control connection and disconnection between the third connecting end and the fourth connecting end based on a second control signal.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display driving circuit and method, and a display module. Background Art

[0002] The GOA (Gate Driver on Array) circuit is used to realize the progressive scanning driving function of the display panel, that is, the row scanning driving circuit is manufactured by using the same process as the thin film transistor (TFT) through providing several control signals through an external circuit to realize the progressive scanning driving function. Among them, the GOA circuit can be a double-sided GOA circuit arranged in the border area on the opposite sides of the display panel.

[0003] The double-sided GOA circuit can solve the problem of gate drive signal voltage drop of the display panel. However, when the double-sided GOA circuit is abnormal, the current method is to stop providing control signals to the double-sided GOA circuit through an external circuit, which will cause the display panel to display abnormally (e.g., a black screen). Summary of the invention

[0004] In a first aspect, an embodiment of the present disclosure provides a display driving circuit configured to drive a display panel to display a picture, wherein the display panel includes a display area and a first frame area and a second frame area located on opposite sides of the display area, wherein the first frame area is provided with a first GOA circuit, and the second frame area is provided with a second GOA circuit, wherein the display driving circuit includes:

[0005] A driver chip, comprising a first output terminal and a second output terminal, configured to output a target GOA signal from the first output terminal and output a detection signal from the second output terminal, wherein the detection signal is used to indicate whether the driver chip is in an overcurrent protection state;

[0006] A control circuit electrically connected to the second output terminal of the driving chip, wherein the control circuit is configured to output a first control signal and a second control signal according to the detection signal;

[0007] A first switch device includes a first connection end, a second connection end and a first control end, wherein the first connection end is electrically connected to the first output end of the driving chip, the second connection end is configured to be electrically connected to the first GOA circuit, and the first control end is electrically connected to the control circuit and configured to control the on / off between the first connection end and the second connection end based on the first control signal;

[0008] The second switching device includes a third connection terminal, a fourth connection terminal and a second control terminal, wherein the third connection terminal is electrically connected to the first output terminal of the driving chip, the fourth connection terminal is configured to be electrically connected to the second GOA circuit, and the second control terminal is electrically connected to the control circuit and configured to control the on / off between the third connection terminal and the fourth connection terminal based on the second control signal.

[0009] Optionally, the control circuit is configured to output the first control signal and the second control signal according to the detection signal, a first switching state of the first switching device, and a second switching state of the second switching device.

[0010] Optionally, the control circuit includes a logic gate control circuit.

[0011] Optionally, the target GOA signal is a start-up voltage signal, and the start-up voltage signal is configured to control the start-up of the first GOA circuit and the second GOA circuit.

[0012] Optionally, it also includes:

[0013] a first resistor, one end of the first resistor being electrically connected to the first control end and the control circuit;

[0014] a second resistor, one end of the second resistor being electrically connected to the second control end and the control circuit;

[0015] The other end of the first resistor and the other end of the second resistor are electrically connected to a reference voltage.

[0016] A second aspect of the present disclosure provides a display driving method, which is applied to the display driving circuit as described in any one of the first aspects, and the method includes:

[0017] Outputting a target GOA signal and a detection signal through the driver chip, wherein the detection signal is used to indicate whether the driver chip is in an overcurrent protection state;

[0018] Based on the control circuit receiving the detection signal, the first control signal is output to the first switching device according to the detection signal to control the on and off of the first switching device, and the second control signal is output to the second switching device to control the on and off of the second switching device, wherein when the first switching device is turned on, the target GOA signal is transmitted to the first GOA circuit, and when the second switching device is turned on, the target GOA signal is transmitted to the second GOA circuit.

[0019] Optionally, outputting the first control signal to the first switch device to control the on-off of the first switch device, and outputting the second control signal to the second switch device to control the on-off of the second switch device according to the detection signal comprises:

[0020] If the detection signal is a first detection signal, a first level signal is output to the first switching device to control the on and off of the first switching device, and a second level signal is output to the second switching device to control the on and off of the second switching device, wherein the first detection signal is a signal output when the driving chip is in an overcurrent protection state, and the switch states controlled by the first level signal and the second level signal are different.

[0021] Optionally, the control circuit is configured to output the first control signal and the second control signal according to the detection signal, the first switch state of the first switch device, and the second switch state of the second switch device, wherein the outputting of the first control signal to the first switch device to control the on-off of the first switch device and the outputting of the second control signal to the second switch device to control the on-off of the second switch device according to the detection signal comprises:

[0022] If the detection signal is a first detection signal, and the first switch state and the second switch state are in an on state, a first level signal is output to the first switch device to control the on and off of the first switch device, and a second level signal is output to the second switch device to control the on and off of the second switch device, wherein the first detection signal is a signal output when the driver chip is in an overcurrent protection state, and the switch states controlled by the first level signal and the second level signal are different;

[0023] In the case where the first switching device and the second switching device are in different switching states, if the first detection signal is received, the second level signal is output to the first switching device, and the first level signal is output to the second switching device; if the second detection signal is received, the first level signal is output to the first switching device, and the second level signal is output to the second switching device, wherein the second detection signal is a signal output when the driver chip is not in the overcurrent protection state.

[0024] Optionally, after outputting the second level signal to the first switching device and outputting the first level signal to the second switching device, the method further includes:

[0025] If the first detection signal is received, the first level signal is output to the first switching device and the second switching device, wherein the first level signal is configured to control the first switching device and the second switching device to be turned off.

[0026] According to a third aspect of the embodiments of the present disclosure, a display driving circuit is provided, characterized in that it is configured to drive a display panel to display a picture, wherein the display panel includes a display area and a first frame area and a second frame area located on opposite sides of the display area, the first frame area is provided with a first GOA circuit, and the second frame area is provided with a second GOA circuit, and the display driving circuit includes:

[0027] a first driving module, configured to output a target GOA signal to the first GOA circuit to control a working state of the first GOA circuit;

[0028] The second driving module is configured to output a target GOA signal to the second GOA circuit to control the working state of the second GOA circuit.

[0029] Optionally, the first driving module and the second driving module are arranged on the same driving chip, or the first driving module and the second driving module are arranged on different driving chips.

[0030] A fourth aspect of the embodiments of the present disclosure provides a display module, including:

[0031] The display panel comprises a display area and a first frame area and a second frame area located at opposite sides of the display area, wherein the first frame area is provided with a first GOA circuit, and the second frame area is provided with a second GOA circuit; and

[0032] In the display driving circuit described in any one of the first aspects, the second connection end of the first switching device is electrically connected to the first GOA circuit, and the fourth connection end of the second switching device is electrically connected to the second GOA circuit; or

[0033] In any one of the display driving circuits described in the third aspect, the first driving module is electrically connected to the first GOA circuit, and the second driving module is electrically connected to the second GOA circuit.

[0034] Optionally, the display module includes a plurality of first signal lines and a plurality of second signal lines;

[0035] The plurality of first signal lines include a first clock signal line, a first voltage signal line, a second voltage signal line and a first frame start signal line, the number of the first switching device is at least one, and among the plurality of first signal lines, at least the first voltage signal line is provided with the first switching device;

[0036] The plurality of second signal lines include a second clock signal line, a third voltage signal line, a fourth voltage signal line and a second frame start signal line, and there is at least one second switching device. Among the plurality of second signal lines, at least the third voltage signal line is provided with the second switching device.

[0037] The technical solution provided in the embodiments of the present disclosure has at least the following technical effects or advantages:

[0038] The display driving circuit provided by the embodiment of the present disclosure is configured to drive a display panel to display a picture. The display panel includes a display area and a first frame area and a second frame area located on opposite sides of the display area. The first frame area is provided with a first GOA circuit, and the second frame area is provided with a second GOA circuit. The display driving circuit includes: a driving chip including a first output terminal and a second output terminal, configured to output a target GOA signal from the first output terminal and output a detection signal from the second output terminal, wherein the detection signal is used to indicate whether the driving chip is in an overcurrent protection state; a control circuit electrically connected to the second output terminal of the driving chip, wherein the control circuit is configured to output a first control signal and a second control signal according to the detection signal. control signal; a first switching device, including a first connection terminal, a second connection terminal and a first control terminal, the first connection terminal is electrically connected to the first output terminal of the driving chip, the second connection terminal is configured to be electrically connected to the first GOA circuit, the first control terminal is electrically connected to the control circuit, and is configured to control the on-off between the first connection terminal and the second connection terminal based on the first control signal; a second switching device, including a third connection terminal, a fourth connection terminal and a second control terminal, the third connection terminal is electrically connected to the first output terminal of the driving chip, the fourth connection terminal is configured to be electrically connected to the second GOA circuit, the second control terminal is electrically connected to the control circuit, and is configured to control the on-off between the third connection terminal and the fourth connection terminal based on the second control signal.

[0039] It can be understood that when an overcurrent occurs in the first GOA circuit, the driver chip will be triggered to enter an overcurrent protection state. At this time, the driver chip outputs a detection signal to the control circuit. The control circuit can output a first control signal according to the detection signal to control the first switch device to be turned off, and output a second control signal to control the second switch device to be turned on, so that the target GOA signal is transmitted to the second GOA circuit through the second switch device, and the second GOA circuit outputs a scan drive signal to drive the display panel on one side for screen display; or, when an overcurrent occurs in the second GOA circuit, the driver chip will be triggered to enter an overcurrent protection state. At this time, the driver chip outputs a detection signal to the control circuit. The control circuit can output a first control signal according to the detection signal to control the first switch device to be turned on, and output a second control signal to control the second switch device to be turned off, so that the target GOA signal is transmitted to the first GOA circuit through the first switch device, and the first GOA circuit outputs a scan drive signal to drive the display panel on one side for screen display. Therefore, the embodiment of the present disclosure can control the GOA circuit on the other side to drive the display panel on one side for screen display when an overcurrent abnormality occurs in the GOA circuit on one side of the display panel, thereby reducing the frequency of screen abnormalities and extending the service life of the display panel.

[0040] The above description is only an overview of the technical solution provided by the embodiment of the present disclosure. In order to more clearly understand the technical means of the embodiment of the present disclosure, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present disclosure more obvious and easy to understand, the specific implementation method of the embodiment of the present disclosure is listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0042] Figure 1 A schematic structural diagram of a display panel of a double-sided GOA circuit is shown;

[0043] Figure 2 A structural block diagram of a display driving circuit according to an embodiment of the present disclosure is shown;

[0044] Figure 3 A circuit schematic diagram of a display driving circuit according to an embodiment of the present disclosure is shown;

[0045] Figure 4 A flow chart showing a display driving method according to an embodiment of the present disclosure is shown;

[0046] Figure 5Another flow chart of the display driving method according to the embodiment of the present disclosure is shown;

[0047] Figure 6 A structural block diagram of another display driving circuit according to an embodiment of the present disclosure is shown;

[0048] Figure 7 A structural block diagram of a display module according to an embodiment of the present disclosure is shown;

[0049] Figure 8 Another structural block diagram of the display module of the embodiment of the present disclosure is shown;

[0050] Fig. 9 A schematic structural diagram of a signal line of a display module according to an embodiment of the present disclosure is shown.

[0051] Among them, 1-display area; 21-first frame area; 22-second frame area; 31-first GOA circuit; 32-second GOA circuit; 11-driving chip; 12-control circuit; 13-first switching device; 14-second switching device; 41-first driving module; 42-second driving module; 10-display driving circuit; 15-first resistor; 16-second resistor. DETAILED DESCRIPTION

[0052] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the term "plurality" appearing herein includes two or more than two situations.

[0053] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of variation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0054] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality may be, for example, the difference between the two equalities is less than or equal to 5% of either one.

[0055] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present between the layer or element and the other layer or substrate.

[0056] Before describing the embodiments of the present disclosure in detail, the relevant principles of GOA are described as follows:

[0057] GOA is the abbreviation of Gate Drive on Array, which is a technology of integrating gate driver on array substrate, used to realize the progressive scanning driving function of display panel.

[0058] In traditional active matrix displays, the row scan signal is realized by an external integrated circuit (G-COF), while the GOA circuit drive is based on the external circuit providing only a few control signals, and the row scan drive circuit is manufactured using the same process as the thin film transistor (TFT) to achieve the row-by-row scan drive function. Therefore, the use of GOA drive saves integrated circuits related to scan drive, reduces the display production cost, and is conducive to narrow frame design.

[0059] From the driving principle of the display panel, it can be known that the row scanning driving circuit is actually equivalent to the function of a shift register. Under the control signal of the external circuit, a shift pulse signal is generated. The shift pulse signal not only drives the pixels of the current row to turn on the TFT (thin film transistor), but also serves as the start signal of the next row (the first row is triggered by the frame start signal STV) and the end signal of the previous row for control. The control signal of the external circuit mainly includes the frame start signal (STV), the clock signal pair CLK and CLKB with opposite phases, the DC voltage signal VSS (generally -8V) that drives the thin film transistor to turn off, and the possible DC voltage signal VDD.

[0060] The GOA circuit may include a voltage phase-related clock signal pair CLK and CLKB, an input signal (Input), a gate closing signal (VSS), a reset signal (Reset), and an output signal (Output) of the current row; the output signal of the current row (such as Output N) not only outputs and drives the pixels of the current row, but also serves as a reset signal for the previous row and an input signal for the next row. In the entire GOA driving circuit, the input signal of the first row of GOA units is the frame start signal STV, and the first row does not output a reset signal. The last row of GOA units is connected to a row of redundant GOA units to achieve the reset of the current row. In this way, under the action of the external control signal, the GOA units of the rows also affect each other, generate shift pulse signals, and perform line-by-line scanning in sequence.

[0061] In order to reduce the problem of voltage drop of the gate driving signal of the display panel, a GOA circuit is respectively arranged on two opposite sides of the gate line of the display panel, that is, a bilateral GOA circuit. For example, the display panel includes a display area and a first frame area and a second frame area located on two opposite sides of the display area, the first frame area is provided with a first GOA circuit, the second frame area is provided with a second GOA circuit, the first GOA circuit and the second GOA circuit include a plurality of cascaded GOA units, and the same-level GOA units of the first GOA circuit and the second GOA circuit are used to drive the same pixel row.

[0062] See also Figure 1 , showing a structural schematic diagram of a display panel with a bilateral GOA circuit.

[0063] like Figure 1 As shown, the display panel includes a display area 1 (AA area) and a first frame area 21 and a second frame area 22 located on opposite sides of the display area 1. The first frame area 21 is provided with a first GOA circuit 31, and the second frame area 22 is provided with a second GOA circuit 32. The first GOA circuit 31 and the second GOA circuit 32 include a plurality of cascaded GOA units. The same-level GOA units of the first GOA circuit 31 and the second GOA circuit 32 are used to drive the same pixel row, that is, for the same row of gate lines, there is a GOA circuit at each end of the left and right ends of the gate line to charge it. In this case, the first GOA circuit 31 and the second GOA circuit 32 can be symmetrically arranged, that is, GOA bilateral drive. It can be understood that the GOA bilateral drive can be set in a medium or large-sized display panel, or in a small-sized display panel, which is not limited here.

[0064] It should be noted that there is another design for GOA bilateral driving, that is, the first GOA circuit 31 is used to drive odd rows among multiple pixel rows of the display panel, and the second GOA circuit 32 is used to drive even rows among multiple pixel rows of the display panel. The first GOA circuit 31 and the second GOA circuit 32 do not interfere with each other, so as to achieve the purpose of sequentially opening each pixel row. In this structure, the bilateral GOA circuits can each be a 4CLK cascade structure, and the corresponding CLK signals on both sides differ by 1 / 8 cycle, forming an 8CLK structure. This design allows a GOA circuit to occupy the space of two pixel heights, thus reducing the border width while keeping the area occupied by GOA unchanged, which is conducive to achieving a narrow border.

[0065] Due to factors such as process or design, there will be progressive GOA circuit failure during the lighting process of the display panel. If there is a problem with the GOA circuit on one side, the voltage on one side of the gate line will be abnormal. The abnormal voltage and the normal voltage will affect each other, resulting in gradual display failure or black screen and other display abnormalities in the horizontal display of the display panel.

[0066] In the related art, when the above display abnormality occurs, that is, when a GOA circuit on one side is abnormal, the solution is to manually replace the screen or manually apply tape to shield the abnormal signal line to maintain the normal display of the display panel. This results in a shorter service life of the display panel.

[0067] In view of this, the embodiments of the present disclosure provide a display driving circuit 10 and method, and a display module, which can solve the problem of display abnormality caused by abnormal GOA unit circuit on one side of the display panel driven by bilateral GOA, reduce the frequency of abnormalities in the display panel image, and extend the service life of the display panel.

[0068] See also Figure 2 , shows a structural block diagram of a display driving circuit 10 according to an embodiment of the present disclosure.

[0069] A first aspect of an embodiment of the present disclosure provides a display driving circuit 10, which is configured to drive a display panel to display a picture. The display panel includes a display area 1 and a first border area 21 and a second border area 22 located on opposite sides of the display area 1. The first border area 21 is provided with a first GOA circuit 31, and the second border area 22 is provided with a second GOA circuit 32.

[0070] In some embodiments, the first GOA circuit 31 and the second GOA circuit 32 include multiple cascaded GOA units, and the same-level GOA units of the first GOA circuit 31 and the second GOA circuit 32 are used to drive the same pixel row, that is, for the same row of gate lines, there is a GOA circuit at each end of the left and right ends of the gate line to drive it, for example, for charging.

[0071] The display driving circuit 10 includes a driving chip 11 , a control circuit 12 , a first switching device 13 and a second switching device 14 .

[0072] The driver chip 11 includes a first output terminal and a second output terminal, and is configured to output a target GOA signal from the first output terminal and a detection signal from the second output terminal, wherein the detection signal is used to indicate whether the driver chip 11 is in an overcurrent protection state. The control circuit 12 is electrically connected to the second output terminal of the driver chip 11, and the control circuit 12 is configured to output a first control signal and a second control signal according to the detection signal. The first switch device 13 includes a first connection terminal, a second connection terminal and a first control terminal, wherein the first connection terminal is electrically connected to the first output terminal of the driver chip 11, the second connection terminal is configured to be electrically connected to the first GOA circuit 31, and the first control terminal is electrically connected to the control circuit 12, and is configured to control the on-off between the first connection terminal and the second connection terminal based on the first control signal. The second switching device 14 includes a third connection terminal, a fourth connection terminal and a second control terminal, the third connection terminal is electrically connected to the first output terminal of the driving chip 11, the fourth connection terminal is configured to be electrically connected to the second GOA circuit 32, and the second control terminal is electrically connected to the control circuit 12, and is configured to control the on and off between the third connection terminal and the fourth connection terminal based on the second control signal.

[0073] It should be noted that the driving chip 11 may be a level conversion chip (L / S IC), and the driving chip 11 is provided with an over current protection (OCP) mechanism. During use, the driver chip 11 outputs the target GOA signal to the first GOA circuit 31 and the second GOA circuit 32 in the display panel. When an abnormality occurs inside the display panel (an abnormality occurs in the first GOA circuit 31 and / or the second GOA circuit 32), such as a large current is generated and exceeds a certain time (for example, greater than or equal to 100 mA and lasts for more than 5 microseconds), the senseFET (detection pin) inside the driver chip 11 will detect the large current, wherein the senseFET can adopt a MOS tube (Metal-Oxide-Semiconductor Fie ld-Effect Transistor, metal-oxide semiconductor field effect transistor), which can proportionally sense the MOS current in the switching device of the driver chip 11 outputting the target GOA signal. The current is converted into a feedback voltage through a resistor and enters the comparator module in the driver chip 11. When the current on the signal routing of the target GOA signal is too large, the feedback voltage will exceed the preset threshold, thereby triggering OCP.

[0074] In the related art, when senseFETzai detects a large current, it usually turns off the switching devices of all target GOA signal channels, that is, enters the overcurrent protection state. In the overcurrent protection state, the switching devices become high-impedance, and the target GOA signal cannot be transmitted to the GOA circuit, so that the display screen will show abnormalities, such as a black screen. After OCP occurs, the driver chip 11 will repeatedly turn off OCP and try to re-output the target GOA signal until the large current disappears and the transmission of the target GOA signal to the GOA circuit is restored. It can be seen that in the related art, when the driver chip 11 detects an overcurrent, the display panel will be in a state of abnormal display, thereby affecting the service life of the display panel.

[0075] See also Figure 3 , shows a circuit schematic diagram of a display driving circuit 10 according to an embodiment of the present disclosure.

[0076] In some embodiments, the control circuit 12 includes a first input terminal, a first output terminal, and a second output terminal. The first input terminal is connected to the first output terminal of the driving chip 11, the first output terminal of the control circuit 12 is connected to the first control terminal of the first switching device 13, and the second output terminal of the control circuit 12 is connected to the second control terminal of the second switching device 14.

[0077] In the embodiment of the present disclosure, when an overcurrent occurs in the first GOA circuit 31, the driver chip 11 is triggered to enter an overcurrent protection state. At this time, the driver chip 11 outputs a detection signal to the control circuit 12. The control circuit 12 can output a first control signal according to the detection signal to control the first switch device 13 to be turned off, and output a second control signal to control the second switch device 14 to be turned on, so that the target GOA signal is transmitted to the second GOA circuit 32 through the second switch device 14, and the second GOA circuit 32 outputs a scan drive signal to drive the display panel on one side to display the picture; or, when an overcurrent occurs in the second GOA circuit 32, the driver chip 11 is triggered to enter an overcurrent protection state. At this time, the driver chip 11 outputs a detection signal to the control circuit 12. The control circuit 2 can output a first control signal according to the detection signal to control the first switch device 13 to be turned on, and output a second control signal to control the second switch device 14 to be turned off, so that the target GOA signal is transmitted to the first GOA circuit 31 through the first switch device 13, and the first GOA circuit 31 outputs a scan drive signal to drive the display panel on one side to display the picture. Therefore, when an overcurrent abnormality occurs in the GOA circuit on one side of the display panel, the embodiment of the present disclosure can control the GOA circuit on the other side to unilaterally drive the display panel to display images, thereby reducing the frequency of image abnormalities and extending the service life of the display panel.

[0078] It can be understood that when the current of the first GOA circuit 31 and the second GOA circuit 32 is normal, the driver chip 11 will not enter the overcurrent protection state. At this time, the driver chip 11 outputs a detection signal to the control circuit 12. The control circuit 12 can output a first control signal according to the detection signal to control the first switch device 13 to be turned on, and output a second control signal to control the second switch device 14 to be turned on, so that the target GOA signal is transmitted to the first GOA circuit 31 through the first switch device 13, and the target GOA signal is transmitted to the second GOA circuit 32 through the second switch device 14, thereby driving the display panel on both sides to display the picture to ensure the picture display effect of the display panel.

[0079] It can be understood that when overcurrent occurs in both the first GOA circuit 31 and the second GOA circuit 32, the driver chip 11 is triggered to enter the overcurrent protection state. At this time, the driver chip 11 outputs a detection signal to the control circuit 12. The control circuit 12 can output a first control signal according to the detection signal to control the first switch device 13 to be cut off, and output a second control signal to control the second switch device 14 to be cut off, so that the target GOA signal cannot be transmitted to the first GOA circuit 31 through the first switch device 13, and the target GOA signal cannot be transmitted to the second GOA circuit 32 through the second switch device 14, so that the display panel cannot be driven to display the picture, and the display panel has display abnormalities such as a black screen. At this time, the screen can be replaced, or the abnormal target GOA signal line can be shielded by means of tape or the like to deal with the display abnormality.

[0080] Therefore, the driver chip 11 of the embodiment of the present disclosure can output a corresponding detection signal according to whether an overcurrent signal is detected, and the control circuit 12 can output a corresponding first control signal and a second control signal according to the received detection signal, so as to control the conduction or cutoff of the first switching device 13, and control the conduction or cutoff of the second switching device 14, thereby controlling the working state of the first GOA circuit 31 and the second GOA circuit 32, and further controlling the screen display of the display panel, which can avoid abnormalities such as poor display or black screen of the display panel when the overcurrent of the unilateral GOA circuit is abnormal.

[0081] In some embodiments, the target GOA signal is a start-up voltage signal (VGH, a high level voltage signal), and the start-up voltage signal is configured to control the start-up of the first GOA circuit 31 and the second GOA circuit 32 .

[0082] Therefore, the embodiment of the present disclosure can control the GOA circuit on one side to start up when an overcurrent abnormality occurs in the GOA circuit on the other side, thereby driving the display panel on one side to display.

[0083] In some embodiments, the target GOA signal includes a start-up voltage signal (VGH, a high level voltage signal). It is understandable that when the target GOA signal is a start-up voltage signal, the driver chip 11 outputs the start-up voltage signal through the second output terminal.

[0084] In some embodiments, the target GOA signal includes a start voltage signal, a clock signal pair with opposite phases, a frame start signal, and a shutdown voltage signal. It can be understood that when the target GOA signal includes multiple types, the driver chip 11 is correspondingly provided with multiple output terminals, and each output terminal can be used to output one of the target GOA signals.

[0085] In some embodiments, the first switching device 13 includes a first NMOS tube (Negative Metal-Oxide-Semiconductor Field-Effect Transistor, N-channel metal-oxide semiconductor field effect transistor); the second switching device 14 includes a second NMOS tube.

[0086] Among them, the gate of the first NMOS tube is connected to the first output end of the control circuit 12, the source of the first NMOS tube is connected to the first output end of the driver chip 11, and the drain of the first NMOS tube is used to connect to the first GOA circuit 31. The gate of the second NMOS tube is connected to the second output end of the control circuit 12, the source of the second NMOS tube is connected to the first output end of the driver chip 11, and the drain of the second NMOS tube is used to connect to the second GOA circuit 32.

[0087] In some embodiments, the control circuit 12 is configured to output the first control signal and the second control signal according to the detection signal, the first switching state of the first switching device 13 and the second switching state of the second switching device 14 .

[0088] It should be noted that the first switch state refers to the on or off state of the first switch device 13 before the control circuit 12 outputs the first control signal. For example, if the control circuit 12 outputs the first control signal at time t1, and the first switch device 13 is in the on state before time t1, then the first switch state is the on state.

[0089] It should be noted that the second switch state refers to the on or off state of the second switch device 14 before the control circuit 12 outputs the second control signal. For example, if the control circuit 12 outputs the second control signal at time t2 and the second switch device 14 is in the off state before time t2, then the second switch state is the off state.

[0090] In some embodiments, the control circuit 12 further includes a second input terminal and a third input terminal, the second input terminal is connected to the first output terminal of the control circuit 12 , and the third input terminal is connected to the second output terminal of the control circuit 12 .

[0091] Thus, the control circuit 12 can use the first control signal outputted last by the first output terminal as the input of the second input terminal, and use the second control signal outputted last by the second output terminal as the input of the third input terminal. It can be understood that the first control signal outputted last by the first output terminal can represent the first switch state, and the second control signal outputted last by the second output terminal can represent the second switch state. Thus, the control circuit 12 can output the current first control signal and the second control signal according to the detection signal, the first switch state and the second switch state.

[0092] In some embodiments, the control circuit 12 includes a logic gate control circuit 12 .

[0093] It can be understood that the logic gate control circuit 12 is a basic component on the integrated circuit, including a plurality of transistors, which can make the high and low levels representing the two signals generate a high level or a low level signal after passing through the transistors. Among them, the high level and the low level can respectively represent the logical "true" and "false" or the binary "1" and "0", thereby realizing the logic operation.

[0094] For ease of understanding, Table 1 shows a logic table of a logic gate control circuit according to an embodiment of the present disclosure.

[0095] Table 1 Logic table of logic gate control circuit

[0096]

[0097] It can be seen from Table 1 that when the detection signal is at the first level L, the first control signal output by the control circuit 12 is consistent with the first switch state, and the second control signal is consistent with the second switch state, for example, when the first switch state is H, the first control signal is also H, and when the second switch state is L, the second control signal is also L; when the detection signal is at the second level H, the first control signal output by the control circuit 12 is opposite to the first switch state, and the second control signal is opposite to the second switch state, for example, when the first switch state is H, the first control signal is L, and when the second switch state is L, the second control signal is H.

[0098] Therefore, based on the above logic table, the control circuit 12 can implement logic operations based on the detection signal, the first switch state and the second switch state to determine the corresponding first control signal and the second control signal.

[0099] In some embodiments, it also includes:

[0100] A first resistor 15, one end of the first resistor 15 is electrically connected to the first control end and the control circuit 12;

[0101] A second resistor 16, one end of the second resistor 16 is electrically connected to the second control end and the control circuit 12;

[0102] The other end of the first resistor 15 and the other end of the second resistor 16 are electrically connected to a reference voltage.

[0103] It can be understood that the first resistor 15 and the second resistor 16 can be used as pull-down resistors in the display driving circuit 10, so that the first control terminal of the first switch device 13 is kept at a low level when the first control signal is not input by the control circuit 12, and the second control terminal of the second switch device 14 is kept at a low level when the second control signal is not input by the control circuit 12. It plays the role of input anti-shake, stabilizes the input signal, and reduces false triggering caused by noise and interference.

[0104] In some embodiments, the reference voltage may be a 3.3V reference voltage.

[0105] In some embodiments, the driving chip 11 , the control circuit 12 , the first switching device 13 , the second switching device 14 , the first resistor 15 , and the second resistor 16 are integrated on the same printed circuit board.

[0106] In some embodiments, the driving chip 11 is disposed on a first printed circuit board, and the control circuit 12, the first switching device 13, the second switching device 14, the first resistor 15, and the second resistor 16 are integrated on a second printed circuit board.

[0107] See also Figure 4 , shows a flow chart of a display driving method according to an embodiment of the present disclosure.

[0108] A second aspect of the present disclosure provides a display driving method, which is applied to the display driving circuit 10 as described in any one of the first aspects, and includes but is not limited to:

[0109] Step S1. Outputting a target GOA signal and a detection signal through the driver chip 11, wherein the detection signal is used to indicate whether the driver chip 11 is in an overcurrent protection state;

[0110] Step S2. Based on the control circuit receiving the detection signal, the first control signal is output to the first switching device according to the detection signal to control the on and off of the first switching device, and the second control signal is output to the second switching device to control the on and off of the second switching device, wherein when the first switching device is turned on, the target GOA signal is transmitted to the first GOA circuit, and when the second switching device is turned on, the target GOA signal is transmitted to the second GOA circuit.

[0111] It is understandable that, since the display driving method introduced in the embodiment of the present disclosure is applied to the display driving circuit 10 as described in any one of the first aspects, the structure and principle of the display driving circuit 10 have been described in detail above, so they will not be repeated here. All display driving circuits 10 and methods including the embodiment of the present disclosure belong to the scope of protection to be provided by the embodiment of the present disclosure.

[0112] In some embodiments, outputting the first control signal to the first switch device 13 to control the on / off of the first switch device 13 and outputting the second control signal to the second switch device 14 to control the on / off of the second switch device 14 according to the detection signal includes:

[0113] If the detection signal is a first detection signal, a first level signal is output to the first switching device 13 to control the on and off of the first switching device 13, and a second level signal is output to the second switching device 14 to control the on and off of the second switching device 14, wherein the first detection signal is a signal output when the driving chip 11 is in an overcurrent protection state, and the switch states controlled by the first level signal and the second level signal are different.

[0114] Exemplarily, the first level signal may be a high level signal, and the corresponding second level signal is a low level signal, or the first level signal may be a low level signal, and the corresponding second level signal is a high level signal. It is understandable that when the first detection signal indicates that the driver chip 11 is in an overcurrent protection state, it indicates that there may be an overcurrent abnormality in the first GOA circuit 31 or the second GOA circuit 32, and the control circuit 12 outputs the first level signal and the second level signal, so that the switching states of the first switch device 13 and the second switch device 14 are different, for example, the first switch device 13 is in the on state, and the second switch device 14 is in the off state; or the first switch device 13 is in the off state, and the second switch device 14 is in the on state. In this way, the GOA circuit on one side of the display panel can be controlled to start, and then the display panel can be driven unilaterally to display the picture, thereby reducing the probability of the display panel having a picture abnormality and extending the service life of the display panel.

[0115] In some embodiments, the control circuit 12 is configured to output the first control signal and the second control signal according to the detection signal, the first switch state of the first switch device 13, and the second switch state of the second switch device 14, wherein the outputting of the first control signal to the first switch device 13 to control the on-off of the first switch device 13 and the outputting of the second control signal to the second switch device 14 to control the on-off of the second switch device 14 according to the detection signal comprises:

[0116] Step S21. If the detection signal is a first detection signal, and the first switch state and the second switch state are in the on state, a first level signal is output to the first switch device 13, and a second level signal is output to the second switch device 14, wherein the first detection signal is a signal output when the driver chip 11 is in the overcurrent protection state, and the switch states controlled by the first level signal and the second level signal are different;

[0117] It can be understood that when the first switch state and the second switch state are on, it means that the target GOA signal can be transmitted to the first GOA circuit 31 through the first switch device 13, and can be transmitted to the second GOA circuit 32 through the second switch device 14. In this case, if the detection signal is the first detection signal, it means that the driver chip 11 detects an overcurrent abnormality, then the control circuit 12 outputs different level signals to the first switch device 13 and the second switch device 14, so that one of the two switch devices is turned on and the other is turned off.

[0118] Step S22. When the first switching device 13 and the second switching device 14 are in different switching states, if the first detection signal is received, the second level signal is output to the first switching device 13, and the first level signal is output to the second switching device 14; if the second detection signal is received, the first level signal is output to the first switching device 13, and the second level signal is output to the second switching device 14, wherein the second detection signal is a signal output when the driver chip 11 is not in the overcurrent protection state.

[0119] It is understandable that if the control circuit 12 still receives the first detection signal when the two switching devices are in different switching states, it means that the overcurrent anomaly in the GOA circuit has not been eliminated, and it is possible that the switch state control of the two switching devices is not accurate enough, for example: the first GOA circuit 31 actually has an overcurrent anomaly, but the first switch device 13 is controlled to be turned on, or the second GOA circuit 32 actually has an overcurrent anomaly, but the second switch device 14 is controlled to be turned on. Therefore, in order to accurately locate the GOA circuit with an overcurrent anomaly, by switching the switch states of the two switching devices, it can be determined which side of the GOA circuit has an overcurrent anomaly.

[0120] It is understandable that if the control circuit 12 receives the second detection signal when the two switching devices are in different switching states, it means that the overcurrent anomaly in the GOA circuit is eliminated, the switching states of the two switching devices are accurately controlled, and the current switching states can be maintained.

[0121] In some embodiments, after outputting the second level signal to the first switch device 13 and outputting the first level signal to the second switch device 14, the method further includes:

[0122] If the first detection signal is received, the first level signal is output to the first switch device 13 and the second switch device 14 , wherein the first level signal is configured to control the first switch device 13 and the second switch device 14 to be turned off.

[0123] It can be understood that after switching the switching state of the first switching device 13 and the switching state of the second switching device 14 at least twice, the first detection signal can still be received, indicating that there is an overcurrent abnormality in the GOA circuits on both sides, so the first switching device 13 and the second switching device 14 are controlled to be cut off, and the target GOA signal is no longer transmitted to the GOA circuit.

[0124] See also Figure 5 , shows another flow chart of the display driving method of an embodiment of the present disclosure.

[0125] For further understanding, the following combination Figure 5 The implementation principle of the display driving method is exemplified.

[0126] Step S101. When the first GOA circuit 31 and the second GOA circuit 32 work normally, the driver chip 11 outputs a detection signal L (a low-level detection signal) and a VGH signal (a start-up voltage signal);

[0127] Step S102. When the first GOA circuit 31 and the second GOA circuit 32 are short-circuited, the driver chip 11 detects a large current, outputs a detection signal of H (a high-level detection signal), and outputs a VGH signal;

[0128] Step S103. The logic gate control circuit 12 outputs the first control signal L and the second control signal H, the first switch device 13 is turned off, the first GOA circuit 31 does not work, the second switch device 14 is turned on, and the second GOA circuit 32 works;

[0129] Step S104. Check whether the overcurrent abnormality is resolved. If so, proceed to step S105a. If not, proceed to step S105b.

[0130] Step S105a. The logic gate control circuit 12 keeps the first control signal at L and the second control signal at H, and only the first GOA circuit 31 works;

[0131] Step S105b. The logic gate control circuit 12 outputs the first control signal H, the second control signal is L, the first switch device 13 is turned on, the first GOA circuit 31 works, the second switch device 14 is turned off, and the second GOA circuit 32 does not work;

[0132] Step S106. Check whether the overcurrent abnormality is resolved. If so, proceed to step S107a. If not, proceed to step S107b.

[0133] Step S107a. The logic gate control circuit 12 outputs the first control signal H, the second control signal is L, and only the second GOA circuit 32 works;

[0134] Step S107b. The logic gate control circuit 12 outputs the first control signal as L, the second control signal as L, and the first GOA circuit 31 and the second GOA circuit 32 do not work.

[0135] See also Figure 6 , shows a structural block diagram of another display driving circuit 10 according to an embodiment of the present disclosure.

[0136] A third aspect of the disclosed embodiment provides a display driving circuit 10, characterized in that it is configured to drive a display panel to display a picture, the display panel includes a display area 1 and a first frame area 21 and a second frame area 22 located on opposite sides of the display area 1, the first frame area 21 is provided with a first GOA circuit 31, and the second frame area 22 is provided with a second GOA circuit 32, and the display driving circuit 10 includes:

[0137] A first driving module 41 is configured to output a target GOA signal to the first GOA circuit 31 to control the working state of the first GOA circuit 31;

[0138] The second driving module 42 is configured to output a target GOA signal to the second GOA circuit 32 to control the working state of the second GOA circuit 32 .

[0139] It should be noted that the first driving module 41 outputs a target GOA signal to the first GOA circuit 31 to control the working state of the first GOA circuit 31; and the second driving module 42 outputs a target GOA signal to the first GOA circuit 31 to control the working state of the first GOA circuit 31. Please refer to the above description of the relevant principles of the GOA circuit. No further details will be given here.

[0140] Therefore, the embodiment of the present disclosure controls two GOA circuits respectively through two driving modules, so that when an overcurrent abnormality occurs in the GOA circuit on one side, a scanning drive signal can be output based on the GOA circuit on the other side to drive the display panel on one side to display the picture, thereby reducing the frequency of picture abnormalities and extending the service life of the display panel.

[0141] In some embodiments, the first driving module 41 and the second driving module 42 are disposed on the same driving chip 11 (eg, Figure 6 Alternatively, the first driving module 41 and the second driving module 42 are arranged on different driving chips 11 (as shown in Figure 7 shown).

[0142] See also Figure 7 , which shows a structural block diagram of a display module according to an embodiment of the present disclosure; see Figure 8 , showing another structural block diagram of the display module of an embodiment of the present disclosure.

[0143] A fourth aspect of the embodiments of the present disclosure provides a display module, including:

[0144] The display panel comprises a display area 1 and a first frame area 21 and a second frame area 22 located at opposite sides of the display area 1, wherein the first frame area 21 is provided with a first GOA circuit 31, and the second frame area 22 is provided with a second GOA circuit 32; and

[0145] In the display driving circuit 10 described in any one of the first aspects, the second connection end of the first switch device 13 is electrically connected to the first GOA circuit 31, and the fourth connection end of the second switch device 14 is electrically connected to the second GOA circuit 32; or

[0146] In any one of the display driving circuits 10 described in the third aspect, the first driving module 41 is electrically connected to the first GOA circuit 31 , and the second driving module 42 is electrically connected to the second GOA circuit 32 .

[0147] like Figure 7 or Figure 8 As shown, the display driving circuit 10 is arranged on a printed circuit board, and the printed circuit board is bound to the display panel through a flexible circuit board.

[0148] It is understandable that the display driving circuit 10 included in the display module introduced in the embodiment of the present disclosure is exactly the display driving circuit 10 introduced in the above embodiment of the present disclosure, and the principle and structure of the display driving circuit 10 have been described in detail before, so it will not be repeated here. All display modules including the display driving circuit 10 of the embodiment of the present disclosure belong to the scope of protection of the embodiment of the present disclosure.

[0149] See also Fig. 9 , shows a schematic structural diagram of the signal lines of the display module of an embodiment of the present disclosure.

[0150] like Fig. 9 As shown, a plurality of gate lines GL are provided in the display area 1 of the display panel. Taking N gate lines as an example, the N gate lines GL are respectively represented as G1G1, G2...G(N). In addition, the first GOA circuit 31 located in the first frame area 21 of the display panel or the second GOA circuit 32 located in the second frame area 22 includes N+2-level GOA units arranged in sequence, wherein the N+2-level GOA units are respectively represented as RS1, RS2...RS(N), RS(N+1), RS(N+2). The above-mentioned N+2-level GOA units (RS1, RS2...RS(N), RS(N+1), RS(N+2)) include: N-level effective GOA units arranged in sequence, namely RS1, RS2...RS(N), and the N-level effective GOA units (RS1, RS2...RS(N)) are respectively connected one-to-one with the N gate lines (G1, G2...G(N)) located in the display area 1. The above-mentioned N+2 levels of GOA units (RS1, RS2...RS(N), RS(N+1), RS(N+2)) also include: virtual GOA units (also called Dummy GOA units), namely RS(N) and RS(N+1), located after the last level of effective GOA units (ie RS(N)).

[0151] In some embodiments, the first GOA circuit 31 includes a plurality of cascaded first GOA units, and the second GOA circuit 32 includes a plurality of cascaded second GOA units. For each GOA unit, a clock signal terminal CK, a voltage signal terminal VGH, a voltage signal terminal VGL, and a frame start signal terminal STV are provided, wherein the clock signal terminal CK is connected to the clock signal line CLK1 (CLK) or LCK2 (CLK), the voltage signal terminal VGH is connected to the voltage signal line VGH, the voltage signal terminal VGL is connected to the voltage signal line VGL, and the frame start signal terminal STV is connected to the frame start signal STV.

[0152] It is understandable that there is no limit to the number of clock signal lines, and it can be one or more.

[0153] In some embodiments, the display module includes a plurality of first signal lines and a plurality of second signal lines, wherein the first signal lines and the second signal lines may be symmetrically arranged. Fig. 9 Only the schematic diagram of the structure of the signal line on one side of the display panel is shown in FIG. The signal line on the other side can be referred to Fig. 9 , I will not go into details here.

[0154] The plurality of first signal lines include a first clock signal line, a first voltage signal line, a second voltage signal line and a first frame start signal line, the number of the first switching device 13 is at least one, and among the plurality of first signal lines, at least the first voltage signal line is provided with the first switching device 13;

[0155] The plurality of second signal lines include a second clock signal line, a third voltage signal line, a fourth voltage signal line and a second frame start signal line, and there is at least one second switching device 14. Among the plurality of second signal lines, at least the third voltage signal line is provided with the second switching device 14.

[0156] In some embodiments, among the multiple first signal lines, at least the first voltage signal line is provided with a first switching device 13, and the first voltage signal line is used to transmit a start voltage signal, and the start voltage signal is configured to drive the first GOA circuit 31 to start; that is, among the multiple first signal lines, the first switching device 13 may be provided only on the first voltage signal line, or the first switching device 13 may be provided on the first voltage signal line and other signal lines, for example, the first switching device 13 is provided on each first signal line, thereby enabling the transmission of the target GOA signals on different signal lines to be controlled separately.

[0157] In some embodiments, among the plurality of second signal lines, at least the third voltage signal line is provided with a second switching device 14, and the third voltage signal line is used to transmit a start voltage signal, and the start voltage signal is configured to drive the second GOA circuit 32 to start; that is, among the plurality of second signal lines, the first switching device 13 may be provided only on the third voltage signal line, or the first switching device 13 may be provided on the third voltage signal line and other signal lines, for example, a third switching device is provided on each second signal line, thereby enabling the transmission of the target GOA signals on different signal lines to be controlled separately.

[0158] In the above description, the technical details such as the composition of each layer of the product are not described in detail. However, those skilled in the art should understand that various technical means can be used to form layers, regions, etc. of desired shapes. Although each embodiment is described separately above, it does not mean that the measures in each embodiment cannot be used in combination to advantage.

[0159] In addition, it should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure is limited to these examples; based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present disclosure as described above, which are not provided in detail for the sake of simplicity.

[0160] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present disclosure.

Claims

1. A display driving circuit, characterized in that: The display panel is configured to drive the display panel to display a picture, the display panel includes a display area and a first frame area and a second frame area located on opposite sides of the display area, the first frame area is provided with a first GOA circuit, the second frame area is provided with a second GOA circuit, and the display driving circuit includes: A driver chip, comprising a first output terminal and a second output terminal, configured to output a target GOA signal from the first output terminal and output a detection signal from the second output terminal, wherein the detection signal is used to indicate whether the driver chip is in an overcurrent protection state; A control circuit electrically connected to the second output terminal of the driving chip, wherein the control circuit is configured to output a first control signal and a second control signal according to the detection signal; A first switch device includes a first connection end, a second connection end and a first control end, wherein the first connection end is electrically connected to the first output end of the driving chip, the second connection end is configured to be electrically connected to the first GOA circuit, and the first control end is electrically connected to the control circuit and configured to control the on / off between the first connection end and the second connection end based on the first control signal; The second switching device includes a third connection terminal, a fourth connection terminal and a second control terminal, wherein the third connection terminal is electrically connected to the first output terminal of the driving chip, the fourth connection terminal is configured to be electrically connected to the second GOA circuit, and the second control terminal is electrically connected to the control circuit and configured to control the on / off between the third connection terminal and the fourth connection terminal based on the second control signal.

2. The display driving circuit according to claim 1, characterized in that: The control circuit is configured to output the first control signal and the second control signal according to the detection signal, a first switching state of the first switching device, and a second switching state of the second switching device.

3. The display driving circuit according to claim 1, characterized in that: The control circuit includes a logic gate control circuit.

4. The display driving circuit according to claim 1, characterized in that: The target GOA signal is a startup voltage signal, and the startup voltage signal is configured to control the startup of the first GOA circuit and the second GOA circuit.

5. The display driving circuit according to any one of claims 1 to 4, characterized in that: Also includes: a first resistor, one end of the first resistor being electrically connected to the first control end and the control circuit; a second resistor, one end of the second resistor being electrically connected to the second control end and the control circuit; The other end of the first resistor and the other end of the second resistor are electrically connected to a reference voltage.

6. A display driving method, characterized in that: Applied to the display driving circuit according to any one of claims 1 to 5, the method comprises: Outputting a target GOA signal and a detection signal through the driver chip, wherein the detection signal is used to indicate whether the driver chip is in an overcurrent protection state; Based on the control circuit receiving the detection signal, the first control signal is output to the first switching device according to the detection signal to control the on and off of the first switching device, and the second control signal is output to the second switching device to control the on and off of the second switching device, wherein when the first switching device is turned on, the target GOA signal is transmitted to the first GOA circuit, and when the second switching device is turned on, the target GOA signal is transmitted to the second GOA circuit.

7. The method according to claim 6, characterized in that The step of outputting the first control signal to the first switch device to control the on-off of the first switch device, and outputting the second control signal to the second switch device to control the on-off of the second switch device according to the detection signal comprises: If the detection signal is a first detection signal, a first level signal is output to the first switching device to control the on and off of the first switching device, and a second level signal is output to the second switching device to control the on and off of the second switching device, wherein the first detection signal is a signal output when the driving chip is in an overcurrent protection state, and the switch states controlled by the first level signal and the second level signal are different.

8. The method according to claim 6, characterized in that The control circuit is configured to output the first control signal and the second control signal according to the detection signal, the first switch state of the first switch device, and the second switch state of the second switch device, wherein the first control signal is output to the first switch device to control the on-off of the first switch device, and the second control signal is output to the second switch device to control the on-off of the second switch device according to the detection signal, including: If the detection signal is a first detection signal, and the first switch state and the second switch state are in an on state, a first level signal is output to the first switch device to control the on and off of the first switch device, and a second level signal is output to the second switch device to control the on and off of the second switch device, wherein the first detection signal is a signal output when the driver chip is in an overcurrent protection state, and the switch states controlled by the first level signal and the second level signal are different; In the case where the first switching device and the second switching device are in different switching states, if the first detection signal is received, the second level signal is output to the first switching device, and the first level signal is output to the second switching device; if the second detection signal is received, the first level signal is output to the first switching device, and the second level signal is output to the second switching device, wherein the second detection signal is a signal output when the driver chip is not in the overcurrent protection state.

9. The method according to claim 8, characterized in that After outputting the second level signal to the first switching device and outputting the first level signal to the second switching device, the method further includes: If the first detection signal is received, the first level signal is output to the first switching device and the second switching device, wherein the first level signal is configured to control the first switching device and the second switching device to be turned off.

10. A display driving circuit, characterized in that: The display panel is configured to drive the display panel to display a picture, the display panel includes a display area and a first frame area and a second frame area located on opposite sides of the display area, the first frame area is provided with a first GOA circuit, the second frame area is provided with a second GOA circuit, and the display driving circuit includes: a first driving module, configured to output a target GOA signal to the first GOA circuit to control a working state of the first GOA circuit; The second driving module is configured to output a target GOA signal to the second GOA circuit to control the working state of the second GOA circuit.

11. The display driving circuit according to claim 10, characterized in that: The first driving module and the second driving module are arranged on the same driving chip, or the first driving module and the second driving module are arranged on different driving chips.

12. A display module, characterized in that: include: The display panel comprises a display area and a first frame area and a second frame area located at two opposite sides of the display area, wherein the first frame area is provided with a first GOA circuit, and the second frame area is provided with a second GOA circuit; as well as The display driving circuit according to any one of claims 1 to 5, wherein the second connection terminal of the first switching device is electrically connected to the first GOA circuit, and the fourth connection terminal of the second switching device is electrically connected to the second GOA circuit; or In the display driving circuit of claim 10 or 11, the first driving module is electrically connected to the first GOA circuit, and the second driving module is electrically connected to the second GOA circuit.

13. The display module according to claim 12, characterized in that: The display module includes a plurality of first signal lines and a plurality of second signal lines; The plurality of first signal lines include a first clock signal line, a first voltage signal line, a second voltage signal line and a first frame start signal line, the number of the first switching device is at least one, and among the plurality of first signal lines, at least the first voltage signal line is provided with the first switching device; The plurality of second signal lines include a second clock signal line, a third voltage signal line, a fourth voltage signal line and a second frame start signal line, and there is at least one second switching device. Among the plurality of second signal lines, at least the third voltage signal line is provided with the second switching device.

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